/Engine/Plugins/Experimental/Mutable/Source/CustomizableObject/Classes/MuCO/CustomizableObject.h
Return a valid Skeletons if cached. ComponentIndex and SkeletonIds are used as a key to find the skeleton.
[TObjectPtr](API\Runtime\Core\Delegates\TObjectPtr)< [USkeleton](API\Runtime\Engine\Animation\USkeleton) > GetCachedMergedSkeleton ( int32 ComponentIndex, const [TArray](API\Runtime\Core\Containers\TArray)< uint16 > & SkeletonIds ) const